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Financial Instruments and Contingent Consideration (Estimated Fair Value of Financial Instruments) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Carrying Amount [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt, including current portion $ (406.7) $ (525.1)
Acquisition-related contingent consideration (3.4) (3.2)
Estimated Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total long-term debt, including current portion (406.7) (525.1)
Acquisition-related contingent consideration (3.4) (3.2)
Interest Rate Swap Contracts [Member] | Carrying Amount [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swap contracts (3.4) (1.5)
Interest Rate Swap Contracts [Member] | Estimated Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swap contracts $ (3.4) $ (1.5)